Read the sentence to find out whether there is any grammatical or idiomatic error in it. The error, if any, will be in one part of the sentence. The letter of that part is the answer. If the given sentence is grammatically and contextually correct, then choose option “No error” as your answer response. (Ignore errors of punctuation, if any).

The cat escaped (A)/ though the open (B)/ window before (C)/ anyone could catch it. (D)

Correct option is B

The error is in part (B).
Corrected Sentence:
"The cat escaped through the open window before anyone could catch it."
Explanation:
· "Though" (incorrect) means "although" or "despite."
· "Through" (correct) means "moving in one side and out the other side of something," which is the correct meaning here.
Thus, the correct answer is: ✔ (b) B ✅